Add export feature for Scheduler

[Luporion]

Is your feature request related to a problem? Please describe.
I wanted to copy my tasks created in the scheduler to a different server, so wouldn't have to add everything in manually anymore.
It really takes way too long to do this.

Describe the solution you'd like
Adding a possibility to export and import tasks or even the entire schedule as something like .XML would be highly useful for this.

Describe alternatives you've considered
The only alternatives are to do everything manually all over again, which takes way too long if theres more than 3 tasks with commands and stuff.